摘要
为研究框架摇摆墙结构中摇摆墙框架刚度比与结构层数的相关性,本文分别建立了4,6,8层钢筋混凝土框架结构并附加不同刚度的摇摆墙,运用有限元软件SAP2000建模进行静力非线性分析,得到各结构的抗震性能。用结构的位移集中系数变化过程反映结构的破坏模式。分析结果表明:相同刚度比的框架摇摆墙结构随地震力的增加结构位移集中系数的变化趋势基本相同,而与层数无关。摇摆墙刚度比小于1.6%时,对框架的破坏机制影响很小。摇摆墙的刚度比大于2.5%时,开始改变框架的破坏机制,逐渐从层破坏机制变为整体破坏机制。摇摆墙的刚度比大于7%时,结构具有稳定的整体破坏机制。
In order to study the seismic performance of different stories rocking-wall frame structure with the same stiffness ratio. This paper use finite element software SAP2000 to built three sets reinforced concrete frame models corresponding to 4th, 6th and 8th story. Each of the model is analysed with pushover technology that can get the structural seismic performance. The failure mechanism can be reflected by the value of displacement concentration factor（DCF）. The results are shown as followings： With the increase of earthquake force, the DCF of each set model with the same stiffness ratio shows the same change stiffness ratio is lower than 1.6%, tio is higher than 2.5 %, it mechanism gradually. Once nism. begins trend, and is not related to the story number. When the it is only a small effect on the failure mechanism of the framework. When the ra- to change the failure mechanism, from story failure mechanism to overall failure the ratio is higher than 7%, the structure will keep the stable overall failure mecha-
出处
《地震工程与工程振动》
CSCD
北大核心
2014年第2期97-103,共7页
Earthquake Engineering and Engineering Dynamics
基金
河北省科技厅科研项目(13275401D)
关键词
不同层数
框架摇摆墙结构
静力非线性
抗震性能
different layers
frame rocking wall structure
static nonlinear analysis
seismic performance
